The Henkel Physicians: A Family's Life in Letters features the National Library of Medicine's collection of the family correspondence of a remarkable family of doctors in 19th century Virginia. The letters document the working lives of the Henkel physicians as they share medical cases, professional rivalries and the experience of the Civil War.
Taubman Health Sciences Library, 1135 Catherine St. Free. thlibrary@umich.eduhttp://www.nlm.nih.gov/hmd/digicolls/henkel/index.html [map]

Apr. 1-5. For kids accompanied by a parent. Apr. 1: "Who Are You Fooling?" A Chance to make paper masks, play games, and find out which plants play tricks. Apr. 2: "Self-Guided Activity Day." Adventure backpacks provide kids with several ideas and materials for activities to do throughout the gardens. Apr. 3: "Sketchbook Detectives," a chance to sketch various plants and look for clues hidden throughout the conservatory. Apr. 4: "Is It Spring Yet?" A hike to look for signs of spring. Followed by hot cocoa and a chance to make a cocoa blend to take home. Apr. 5: "Windowsill Wonders," a chance to make a windowsill herb garden.
10 a.m.-noon, Matthaei, 1800 N. Dixboro. $5 (except Apr. 2, free). 647-7600. [map]

All kids age 5 & up invited for a short reading from Hall of Famer Cal Ripken's new children's book Hothead, along with an assortment of baseball-related games and craft activities. Kids encouraged to wear their baseball jersey.
11 a.m., Barnes & Noble, 3235 Washtenaw. Free. 973-1618. [map]

The Sky Tonight (11:30 a.m. Sat. & 1:30 p.m. both days) is an exploration of the current night sky.

Flight Adventures (Sat. 12:30 p.m & Sun. 2:30 p.m.) is an audiovisual show examining the science of flight through the eyes of a young girl and her grandfather as they explore how birds, kites, planes, and models fly and learn about the history and future of human flight.
Various times, Natural History Museum, 1109 Geddes at North University. $5. 764-0478. [map]

(Danny Mooney, 2013). When a young soldier in Vietnam gets dumped by his girlfriend, he and his best friend decide to go AWOL to get her back.
Michigan Theater. Tickets: $10 (children under 12, students with ID, seniors age 55 & older, & U.S. veterans, $8; MTF members, $7.50; films before 6 p.m., $7). michtheater.org, 668-TIME. [map]

Every Mon. Jigs, reels, and strathspeys. Usually with live music. All dances taught; dances this month are particularly beginner-friendly.
7:30-9:30 p.m., the Barn at Gretchen's House V, 2625 Traver. $5. 395-7782, 769-1052, 426-0241. [map]